ROWE HIGHTEC ADVANCE FULLY SYNTHETIC SAE 10W-40 Viscosity SAE 10W-40 Base oil ADVANCE FULLY SYNTHETIC Equivalent quality in accordance with EU-law as per API SN/SM/SL/SJ/SH/SG JASO MA2 HIGHTEC ADVANCE FULLY SYNTHETIC SAE 10W-40 a high-performance engine oil of SAE grade 10W-40 produced using HC synthetic oil and selected base oils. Its exceptionally high level of performance is achieved through the interaction of this special base oil composition and the advanced additives.